I have two UserControls (uc1 and uc2) loading into a third UserControl (shell). Shell has two properties, uc1 and uc2, of type UserControl1 and UserControl2, and each have a DependencyProperty registered to their own classes called IsDirty: public static readonly DependencyProperty IsDirtyProperty = DependencyProperty.Register("IsDirty"...
I am just wondering what is the best way of getting INotifyPropertyChanged in my NHibernate Domain Objects' Collections? ...
Using C#/.Net 4.0, I'm storing data in a BindingList where dataRow is being defined at run time via Reflection.Emit. (The structure of the incoming data varies and is defined by an external source.) After struggling a bit with my first foray into the world of reflection and IL, I have been able to create my dataRow fill it with values, f...
In WPF we have two threads (at least): rendering and a UI thread. When I raise an event OnNotifyPropertyChanged on some property changes, it is raised on the UI thread. This information needs to be dispatched to WPF rendering thread for re-rendering. I am assuming it is done in a synchronous manner ( Dispatcher.Invoke ) but how does it r...
There have been plenty of articles about how to use reflection and LINQ to raise PropertyChanged events in a type-safe way, without using strings. But is there any way to consume PropertyChanged events in a type-safe manner? Currently, I'm doing this void model_PropertyChanged(object sender, PropertyChangedEventArgs e) { switch (e....
Hi I just recently discovered an INotifyPropertyChange interface. I managed to implement this interface in my clss and everything works fine. However I was wondering if it is possible to intercept this event in code and fire a function Let's say that I have a function DoStuff() and I wan't to fire this function everytime property1, p...
How does two-way databinding work in Silverlight when the data source object's properties don't raise PropertyChanged events in their setters? For example, in code samples, I've seen databinding to instances of the System.Windows.Point struct, which does not implement INotifyPropertyChanged and is mutable. What happens (or should happen...
Hi, I've a class that raises INotifyPropertyChanged events. I'm quite happy with databinding to UI controls, but I'd like to get these events fired into a non-UI class, but am unsure of what to register or hook into. I know it should be simple, and it probably is, I'm just after a quick pointer down this road. Many Thanks Paul ...
Hi, I have a viewmodel named EmployeeViewModel which is inherited from ViewModelBase. here is the implementation of ViewModelBase. public event PropertyChangedEventHandler PropertyChanged; public void FirePropertyChanged(string propertyname) { var handler = PropertyChanged; if (handler != null) ha...
I've been using the following bit of code in a cookie cutter fashion, across dozens of classes public event PropertyChangedEventHandler PropertyChanged; protected void NotifyPropertyChanged(string propertyName) { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(proper...
I'm trying to databind the visual state of a control (using code from the answer to http://stackoverflow.com/questions/2208363/visualstatemanager-and-databinding) to a property on my viewmodel in Silverlight. On the viewmodel-side when I expose a standard property Public Property State As String Get Return _state End Ge...
Im a bit confused. I dont understand what code is actually is executed when I implement INotifyPropertyChanged interface. As i imagine the chain goes like this: My class impliments INotifyPropertyChanged=> Every property`s setter calls NotifyPropertyChanged method=> PropertyChangedEventHandler invokes=>??? And i wonder what code ...
I have a class from a vendor that lets me download objects from their server... it synchronizes locks and changes for updates and notifies clients if they try to update something that is out of date... However, when the client gets these objects, there is no notification to the server if they've been modified elsewhere. Is there a good...
Say I have the following class: public MainFormViewModel { public String StatusText {get; set;} } What is the easiest smallest way to get my changes to StatusText to reflect to any controls that bind to it? Obviously I need to use INotifyPropertyChanged, but is there a cool way to do it that does not clutter up my code? need lots...
I have seen apps implementing this interface everywhere. In many cases, we could use the new property syntax like public int Foo { get; set; } which I like very much. However, in order to implement this interface, this one has to turn into 10 lines or so. This makes the code very cluttered, and I'm not sure if it also hurts performan...
hello, I have got a collection of viewModels(InputViewModel) in an other viewModel(ScenarioManager). each InputviewModel has an instance of a Class(RestOfInput) which contains properties able to raise the OnPropertyChanged. when one of these properties changes the event is handled by this method (in InputViewModel) : public void...
I have a series of views that are to be displayed depending on the currently selected item in a tree within a parent view. These views are created and registered with the region during the initialization method of the parent view and are being correctly deactivated/activated, therefore giving the effect of swapping in/out the correct vie...
I'm trying to do this as MVVM as possible: My Model (InterestTypeEntity) implements INotifyPropertyChanged. My ViewModel (InterestTypeAllViewModel) has an ObservableCollection that binds to a DataGrid. When changes are made to it, it sends those changes (add/remove) to the Database. the problem is, I want to also be able to update the d...
Possible Duplicate: Why does C# require you to write a null check every time you fire an event? I see often the following code but somehow don't get it. if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs("UIState")); Why do i need to check if the event is null before rasing it. All of the t...
I use the LINQ to SQL Classes to access to my database. Now I want to use the LINQ to SQL Classes for WPF DataBindings and validation. How do I implement these two interfaces to my projects Model? Is it possible implement INotifyProperty automatically? ...